Tourists snorkel near a turtle as it looks for food among the coral in the lagoon at Lady Elliot Island north-east of the town of Bundaberg in Queensland, Australia, June 9, 2015. Australia's Great Barrier Reef is in very poor condition because of climate change, over fishing and land clearing, a state agency said August 30, as it downgraded the reef's status to the lowest level, which could jeopardize its World Heritage status.
Coral surrounds a small island on the Great Barrier Reef, located off the coast of Queensland, near the town of Rockhampton, in Australia, November 15, 2018. The Great Barrier Reef Marine Park Authority (GBRMPA) said the health of the world's largest coral reef system, off the northeast coast of the Queensland state, had deteriorated since its last review, in 2014, but the problems the reef faces were not insurmountable.
Coral reefs can be seen from above on the Great Barrier Reef, located off the coast of Queensland, near the town of Rockhampton, in Australia, November 15, 2018. The reef stretching for more than 1430 miles is home to 400 types of coral, 1,500 species of fish and 4,000 types of mollusks. Some parts of the reefs remained in good condition but many species including dolphins, dugongs, sharks, rays and turtles were being threatened.